Add getId() method for ol.render.Feature

test/spec/ol/format/mvt.test.js

@@ -73,12 +73,19 @@ where('ArrayBuffer.isView').describe('ol.format.MVT', function() {
     });
 
     it('parses id property', function() {
+      // ol.Feature
       var format = new ol.format.MVT({
         featureClass: ol.Feature,
         layers: ['building']
       });
       var features = format.readFeatures(data);
       expect(features[0].getId()).to.be(2);
+      // ol.render.Feature
+      format = new ol.format.MVT({
+        layers: ['building']
+      });
+      features = format.readFeatures(data);
+      expect(features[0].getId()).to.be(2);
     });
 
   });

test/spec/ol/render/feature.test.js

@@ -14,7 +14,7 @@ describe('ol.render.Feature', function() {
   describe('Constructor', function() {
     it('creates an instance', function() {
       renderFeature =
-          new ol.render.Feature(type, flatCoordinates, ends, properties);
+          new ol.render.Feature(type, flatCoordinates, ends, properties, 'foo');
       expect(renderFeature).to.be.a(ol.render.Feature);
     });
   });
@@ -57,6 +57,12 @@ describe('ol.render.Feature', function() {
     });
   });
 
+  describe('#getId()', function() {
+    it('returns the feature id', function() {
+      expect(renderFeature.getId()).to.be('foo');
+    });
+  });
+
   describe('#getProperties()', function() {
     it('returns the properties it was created with', function() {
       expect(renderFeature.getProperties()).to.equal(properties);